Physics
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jatp...44..869m&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 44, Oct. 1982, p. 869-874.
Physics
9
Cold Plasmas, Electromagnetic Wave Transmission, Electron Density Profiles, Hot Electrons, Plasma-Electromagnetic Interaction, Plasmapause, Whistlers, Collisionless Plasmas, Electron Plasma, Group Velocity, Maxwell-Boltzmann Density Function, Space Plasmas, Wave Dispersion
Scientific paper
Theoretical spectrograms are computed for whistlers propagating beyond the plasmapause. The electron distribution function was modeled as consisting of a hot plus a cold component and an appropriate dispersion equation is used. A collisionless (CL) model is used for the cold electron concentration and for the hot electron component the derived model assumes a bi-Maxwellian distribution function with a loss cone at the equator. The results indicate limits on the use of the cold plasma approximation (c.p.a.) in the study of magnetospheric whistler propagation beyond the plasmapause and show that whistler analysis with the c.p.a. may under or overestimate the L value of the path deduced from ground spectrograms, depending on the anisotropy of the hot component.
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